src/components/Graph.vue

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contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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  http://www.apache.org/licenses/LICENSE-2.0

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distributed under the License is distributed on an "AS IS" BASIS,
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limitations under the License. -->
<template>
  <div class="chart" ref="chartRef" :style="`height:${height};width:${width};`">
    <div v-if="!available" class="no-data">No Data</div>
    <div class="menus" v-show="visMenus" ref="menus">
      <div class="tools" @click="associateMetrics">
        {{ t("associateMetrics") }}
      </div>
      <div
        class="tools"
        @click="viewTrace"
        v-if="props.relatedTrace && props.relatedTrace.enableRelate"
      >
        {{ t("viewTrace") }}
      </div>
    </div>
    <el-drawer
      v-model="showTrace"
      size="100%"
      :destroy-on-close="true"
      :before-close="() => (showTrace = false)"
      :append-to-body="true"
    >
      <Trace :data="traceOptions" />
    </el-drawer>
  </div>
</template>
<script lang="ts" setup>
import {
  watch,
  ref,
  Ref,
  onMounted,
  onBeforeUnmount,
  unref,
  computed,
} from "vue";
import type { PropType } from "vue";
import { useI18n } from "vue-i18n";
import { EventParams } from "@/types/app";
import { Filters, RelatedTrace } from "@/types/dashboard";
import { useECharts } from "@/hooks/useEcharts";
import { addResizeListener, removeResizeListener } from "@/utils/event";
import Trace from "@/views/dashboard/related/trace/Index.vue";
import associateProcessor from "@/hooks/useAssociateProcessor";

/*global Nullable, defineProps, defineEmits*/
const emits = defineEmits(["select"]);
const { t } = useI18n();
const chartRef = ref<Nullable<HTMLDivElement>>(null);
const menus = ref<Nullable<HTMLDivElement>>(null);
const visMenus = ref<boolean>(false);
const { setOptions, resize, getInstance } = useECharts(
  chartRef as Ref<HTMLDivElement>
);
const currentParams = ref<Nullable<EventParams>>(null);
const showTrace = ref<boolean>(false);
const traceOptions = ref<{ type: string; filters?: unknown }>({
  type: "Trace",
});
const props = defineProps({
  height: { type: String, default: "100%" },
  width: { type: String, default: "100%" },
  option: {
    type: Object as PropType<{ [key: string]: any }>,
    default: () => ({}),
  },
  filters: {
    type: Object as PropType<Filters>,
  },
  relatedTrace: {
    type: Object as PropType<RelatedTrace>,
  },
});
const available = computed(
  () =>
    (Array.isArray(props.option.series) &&
      props.option.series[0] &&
      props.option.series[0].data) ||
    (Array.isArray(props.option.series.data) && props.option.series.data[0])
);
onMounted(async () => {
  await setOptions(props.option);
  chartRef.value && addResizeListener(unref(chartRef), resize);
  instanceEvent();
});

function instanceEvent() {
  setTimeout(() => {
    const instance = getInstance();

    if (!instance) {
      return;
    }
    instance.on("click", (params: EventParams) => {
      currentParams.value = params;
      if (!menus.value || !chartRef.value) {
        return;
      }
      visMenus.value = true;
      const w = chartRef.value.getBoundingClientRect().width || 0;
      const h = chartRef.value.getBoundingClientRect().height || 0;
      if (w - params.event.offsetX > 125) {
        menus.value.style.left = params.event.offsetX + "px";
      } else {
        menus.value.style.left = params.event.offsetX - 125 + "px";
      }
      if (h - params.event.offsetY < 60) {
        menus.value.style.top = params.event.offsetY - 60 + "px";
      } else {
        menus.value.style.top = params.event.offsetY + 5 + "px";
      }
    });
    document.addEventListener(
      "click",
      () => {
        if (instance.isDisposed()) {
          return;
        }
        visMenus.value = false;
        instance.dispatchAction({
          type: "updateAxisPointer",
          currTrigger: "leave",
        });
      },
      true
    );
  }, 1000);
}

function associateMetrics() {
  emits("select", currentParams.value);
  visMenus.value = true;
  updateOptions();
}

function updateOptions() {
  const instance = getInstance();
  if (!instance) {
    return;
  }
  if (!props.filters) {
    return;
  }
  if (props.filters.isRange) {
    const { eventAssociate } = associateProcessor(props);
    const options = eventAssociate();
    setOptions(options || props.option);
  } else {
    instance.dispatchAction({
      type: "updateAxisPointer",
      dataIndex: props.filters.dataIndex,
      seriesIndex: 0,
    });
  }
}

function viewTrace() {
  const item = associateProcessor(props).traceFilters(currentParams.value);
  traceOptions.value = {
    ...traceOptions.value,
    filters: item,
  };
  showTrace.value = true;
  visMenus.value = true;
}

watch(
  () => props.option,
  (newVal, oldVal) => {
    if (!available.value) {
      return;
    }
    if (JSON.stringify(newVal) === JSON.stringify(oldVal)) {
      return;
    }
    let options;
    if (props.filters && props.filters.isRange) {
      const { eventAssociate } = associateProcessor(props);
      options = eventAssociate();
    }
    setOptions(options || props.option);
  }
);
watch(
  () => props.filters,
  () => {
    updateOptions();
  }
);

onBeforeUnmount(() => {
  removeResizeListener(unref(chartRef), resize);
});
</script>
<style lang="scss" scoped>
.no-data {
  font-size: 12px;
  height: 100%;
  box-sizing: border-box;
  display: -webkit-box;
  -webkit-box-orient: horizontal;
  -webkit-box-pack: center;
  -webkit-box-align: center;
  color: #666;
}

.chart {
  overflow: hidden;
  flex: 1;
}

.menus {
  position: absolute;
  display: block;
  white-space: nowrap;
  z-index: 9999999;
  box-shadow: #ddd 1px 2px 10px;
  transition: all cubic-bezier(0.075, 0.82, 0.165, 1) linear;
  background-color: rgb(255, 255, 255);
  border-radius: 4px;
  color: rgb(51, 51, 51);
  padding: 5px;
}

.tools {
  padding: 5px;
  color: #999;
  cursor: pointer;

  &:hover {
    color: #409eff;
    background-color: #eee;
  }
}
</style>